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Thread: Broken razors and grain structure

  1. #1
    Senior Member MileMarker60's Avatar
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    Default Broken razors and grain structure

    So Gregg71's post on heat treating O1 was interesting! and it's been a while since broke a razor.
    So I thought I would see what I had around to mess up
    I'll be the first to say I don't know half the amount that some here do.... but I do know enough to be dangerous!
    So what to brake..
    I figured I would start with every ones favorite Chinese import.
    Name:  GD.jpg
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    Then a vintage AW Wadsworth
    Name:  AW.jpg
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    O1 that I junked
    Name:  O1.jpg
Views: 496
Size:  35.0 KB
    And lastly a Pakistan razor
    Name:  pakistan.jpg
Views: 527
Size:  17.0 KB

    What I found interesting.
    1) how grainy the Chinese razor looks, I didn't expect it look great but not that grainy
    2) surprised how smooth the Pakistan razor looks. That being said the geometry of that razor was all over the place. spine width from .20-.16
    A question that may not be answered .. I wonder if the Chinese razor is a product of poor steel of poor HT.

    I think I have at least 1 SS razor to bust up and see how it looks.
    It's interesting to see what's inside...

    Any opinions on the pics are welcome!
    Last edited by MileMarker60; 02-21-2015 at 11:19 PM.

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    Senior Member blabbermouth Substance's Avatar
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    Thanks for sharing mate
    With the GD have you considered running it through a HT and re breaking to see if the structure alters to confirm material or process flaws ?
    Look forward to further info
    spazola and bluesman7 like this.
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    Senior Member MileMarker60's Avatar
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    I did play around with it a little bit.
    Here it is after normalizing and HTing the same as I would 1095
    Name:  P1080885.jpg
Views: 553
Size:  21.9 KB

    Here is a piece I did as if it was O1
    Name:  P1080887.jpg
Views: 517
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    Plan on trying another piece a little differently to see what happens
    Last edited by MileMarker60; 02-21-2015 at 11:18 PM.

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    Senior Member blabbermouth Substance's Avatar
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    Looks more than likely to be HT is the issue as those grains look very similar hey
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    Senior Member MileMarker60's Avatar
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    I'm not sure.. my ht on the Chinese razor is little more then a guess. While one looks a slight bit better , it's still a big different when placed side by side
    Here is the the re-HT razor beside the Pakistan razor
    Name:  P1080890.jpg
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    Substance likes this.

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    illegitimum non carborundum Utopian's Avatar
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    This is an awesome thread!

    Anything involving the breaking of Chinese razors is a good thing!

    Realistically though, an N of one is insufficient. An N of 1000, now that may have some stastical value.
    Neil Miller and Substance like this.

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    rhensley rhensley's Avatar
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    I was a repair welder for over 40 years and with cast steel all of the cast steel I worked on looked grainy. Even some of the metal that wasn't cast looked grainy if it broke just right. What really matters is the metal mix. what went into the steel when it was made. there's a word for it but it escapes me at the present. Now I'm not defending the Chinese or Pakistan blades just telling what I've seen.

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    Senior Member blabbermouth edhewitt's Avatar
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    Quote Originally Posted by Utopian View Post
    This is an awesome thread!

    Anything involving the breaking of Chinese razors is a good thing!

    Realistically though, an N of one is insufficient. An N of 1000, now that may have some stastical value.
    Are you offering to supply the 1000 Chinese razors?
    MileMarker60 likes this.
    Bread and water can so easily become tea and toast

  12. #9
    Senior Member MileMarker60's Avatar
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    Quote Originally Posted by Utopian View Post
    This is an awesome thread!

    Anything involving the breaking of Chinese razors is a good thing!

    Realistically though, an N of one is insufficient. An N of 1000, now that may have some stastical value.
    I agree one doesn't mean much, that being said my intent wasn't for this to be scientific experiment. I make no claims of HRC, edge taking, holding ability. Just breaking, looking and taking a pic


    Quote Originally Posted by rhensley View Post
    I was a repair welder for over 40 years and with cast steel all of the cast steel I worked on looked grainy. Even some of the metal that wasn't cast looked grainy if it broke just right. What really matters is the metal mix. what went into the steel when it was made. there's a word for it but it escapes me at the present. Now I'm not defending the Chinese or Pakistan blades just telling what I've seen.
    It's a interesting point but I'm not sure if any modern razor is cast.
    The effects to grain structure on hardened cast steel is a question that would have to go higher then me

  13. #10
    Senior Member MileMarker60's Avatar
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    Here is a cpm154 SS razor I found in my box.
    It would take but not hold a edge very long.
    Upon breaking it I guess it needed a few more hardness points. You can see where the thin edge bent before it broke.
    Name:  P1080903.jpg
Views: 399
Size:  37.1 KB
    ScottGoodman likes this.

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